Collider constraints on light pseudoscalars
Ulrich Haisch, Jernej F. Kamenik, Augustinas Malinauskas, and Michael, Spira
TL;DR
This paper analyzes collider constraints on light pseudoscalars, focusing on specific mass regions where non-perturbative QCD effects are significant, providing formulas to interpret future LHC searches.
Contribution
It offers a comprehensive set of formulas to incorporate non-perturbative effects in collider bounds on light pseudoscalars, aiding future experimental analyses.
Findings
Constraints on pseudoscalars in the 3-5 GeV and 9-11 GeV mass ranges.
Formulas for non-perturbative QCD effects and mixing with bound states.
Guidance for interpreting future LHC searches for light CP-odd states.
Abstract
We investigate the bounds on light pseudoscalars that arise from a variety of collider searches. Special attention is thereby devoted to the mass regions and , in which a meaningful theoretical description has to include estimates of non-perturbative effects such as the mixing of the pseudoscalar with QCD bound states. A compendium of formulas that allows to deal with the relevant corrections is provided. It should prove useful for the interpretation of future LHC searches for light CP-odd spin-0 states.
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